Spectral interference in the determination of molybdenum in geological samples by ICP-AES: A reassessment

被引：3

作者：

Agnihotri, R ^{[1
]}

Sarin, M ^{[1
]}

机构：

[1] Phys Res Lab, Ahmedabad 380009, Gujarat, India

来源：

GEOSTANDARDS NEWSLETTER-THE JOURNAL OF GEOSTANDARDS AND GEOANALYSIS | 2001年 / 25卷 / 2-3期

关键词：

ICP-AES; molybdenum; marine sediments; USGS reference materials; spectral interference;

D O I：

10.1111/j.1751-908X.2001.tb00605.x

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Molybdenum concentrations in USGS reference materials and marine sediments have been measured using ICP-AES following dissolution of samples in HF-HNO3-HCl with final aliquots made in 1 mol l(-1) HCl. The concentrations determined at one of the recommended wavelengths, 281.615 nm, are found to be severely affected by a spectral interference from A leading to inaccurate analytical results. At an alternative wavelength, 202.030 nm, the Mo emission signal is attenuated in the window size +/- 0.094 nm due to the presence of an Fe line (202.074 nm), thus affecting the analytical sensitivity of measurements. The attenuation of the emission signal at 202.030 nm could severely limit the determination of Mo in geological samples.

引用

页码：293 / 297

页数：5

共 10 条

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